I just saw it today and got really excited- the bulb mode and dual exposure are the two things I wish my 210 had.. The mini 90 uses the smaller film but it could be pretty amazing.

Of course more film will be wasted but some shots will surely turn out great. My 210 always tries to "properly" expose the picture but because that often requires long exposures that the camera doesn't want to do so it tries to fire the flash. this way you either get an underexposed photo if you cover the flash or a black background and washed-out foreground if you don't. Bulb mode would solve this and the dual exposure sounds fantastic too!